does any one know please as im going to be buying it tomorrow

 

have a look at the bar code on top of the gear box,

it should read something like this , 5c/37/wuc/2058780 , on this particular code , W is the speed rating , if that's the same the yes,

if not just put the one from your gearbox, in the one you get.

 

I'm pretty sure they are all the same. The ones on the MGF and TF are the same as the 200. No reason why the Zed should be any different same design gearbox and engine.

 

not all the same gear boxes carrie the same speed sensor,hasen't the wheel size of the car got somthing to do with it, ie 15s , 16s.

 

No, the speed sensor just creates so many pulses per second. The speedo does the rest.
The wheels size has nowt to do with it. That's why it comes from the final drive on the gear box.

 

so why do thay use diffrent speend sensors in the r65s and pg1's then , ie w , y , with diffrent sized wheels

also if you change wheel size,15's to 17's why is the speedo out,

when i put a pg1 in my metro with 13's on, i had to use a 2.0l speed sensor to get the speedo to read correctly or closer than the 1.8 speed sensor which was in the pg1 .

 

I just put the R65 sensor onto my new PG1 gearbox, but it doesn't read anything at all..

The MG ZR loom doesnt have a standard connector for a speed sensor, it uses ABS readings for speed measurement.. I'm not connecting the ABS system however, so I have to use a speed sensor..

I found that the speed sensor off the PG1 should use White/Orange, Black and Brown/Pink.. So I soldered it all together, but now it still doesnt work!

Should I be able to use a speed sensor on an MG ZR loom that normally uses ABS readings? And How to solve this then?

 

so why do thay use diffrent speend sensors in the r65s and pg1's then , ie w , y , with diffrent sized wheels

also if you change wheel size,15's to 17's why is the speedo out,

when i put a pg1 in my metro with 13's on, i had to use a 2.0l speed sensor to get the speedo to read correctly or closer than the 1.8 speed sensor which was in the pg1 .

Sorry? run that by me again.

Why did you fit a speed sensor to a Metro?

They use cable speedos, just run the speedo cable to the speedo drive, and bob is the brother of one of your parents.

 

Sorry? run that by me again.

Why did you fit a speed sensor to a Metro?

They use cable speedos, just run the speedo cable to the speedo drive, and bob is the brother of one of your parents.

no im not :lol:

 

if u use the correct size tyres the rolling radius of 15s/17s will be virtually identical meaning your speeo is out by less than 1% if it is at all.

 

also if you change wheel size,15's to 17's why is the speedo out,

Because the rolling radius is different and this alters the speedo calibration. The speedo pick up will still create the same amount of pulses for a given amount of revs. It's just that you have lost calibration by altering the wheel size.

A speed sensor is simply a hall effect device. It's just a magnet passing through an electrical coil at every revolution it makes. This creates a pulse and sends it to the speedo which is calibrated to receive the signal.
It would be impractical to create different sensors, more rather that the difference would be the pinion that it attaches to, to change the 'gearing' and hence vary the output of the pulse or, more likely, simply alter the calibration of the speedo instead.